In a message dated 23/11/2002, shammon1@............. writes:

>  I live near the sea and if I don't change the wire, the wire rusts and 
> eventually will snap under tension. Usually in less than 6 months.

Hi Steve.

     One practical suggestion is to coat the wire with 'pure' soap solution 
and let it dry. This is the 'secret' behind the soaped wire wool scouring 
pads (Brillo Pads) for kitchen use. Soap is also added to 'ordinary' steel 
wire wool to prevent it corroding.  

     A Cardan hinge is a single foil hinge in tension with the length much 
greater than the separation of the clamp bars. This enables it to carry loads 
parallel to the hinge axis. A pair off them, accurately aligned, may be used 
in a Lehman seismometer. 

     Regards,

     Chris Chapman
In a message dated 23/11/2002, shammon1@............. writes:



 I live near the sea and if I don't change the wire, the wire rusts and eventually will snap under tension. Usually in less than 6 months.




Hi Steve.



     One practical suggestion is to coat the wire with 'pure' soap solution and let it dry. This is the 'secret' behind the soaped wire wool scouring pads (Brillo Pads) for kitchen use. Soap is also added to 'ordinary' steel wire wool to prevent it corroding.  



     A Cardan hinge is a single foil hinge in tension with the length much greater than the separation of the clamp bars. This enables it to carry loads parallel to the hinge axis. A pair off them, accurately aligned, may be used in a Lehman seismometer. 



     Regards,



     Chris Chapman